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              <b>0. </b>
            
             概览
            
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              <b>1. </b>
            
             起航
            
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                <span>详细功能列表     </i></span>
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                <span>使用限制     </i></span>
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                <span>SQL支持详细列表     </i></span>
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              <b>2. </b>
            
             使用指南
            
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              <a href="http://shardingjdbc.io/document/legacy/1.x/cn/02-guide/concepts/">
                <span>核心概念     </i></span>
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                <span>分库分表     </i></span>
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                <span>读写分离     </i></span>
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                <span>强制路由     </i></span>
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              <a href="http://shardingjdbc.io/document/legacy/1.x/cn/02-guide/key-generator/">
                <span>分布式主键     </i></span>
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                <span>事务支持     </i></span>
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              <a href="http://shardingjdbc.io/document/legacy/1.x/cn/02-guide/subquery/">
                <span>分页及子查询     </i></span>
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              <a href="http://shardingjdbc.io/document/legacy/1.x/cn/02-guide/test-framework/">
                <span>测试引擎     </i></span>
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              <b>3. </b>
            
             设计规划
            
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                <span>架构设计     </i></span>
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              <a href="http://shardingjdbc.io/document/legacy/1.x/cn/03-design/roadmap/">
                <span>未来线路规划     </i></span>
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<li><a href="#已完成">已完成</a>
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<li><a href="#数据库">数据库</a></li>
<li><a href="#dql">DQL</a></li>
<li><a href="#dml">DML</a></li>
<li><a href="#ddl">DDL</a></li>
<li><a href="#配置">配置</a></li>
<li><a href="#sql解析">SQL解析</a></li>
<li><a href="#sql改写">SQL改写</a></li>
<li><a href="#访问路由">访问路由</a></li>
<li><a href="#结果归并">结果归并</a></li>
<li><a href="#分库分表">分库分表</a></li>
<li><a href="#读写分离">读写分离</a></li>
<li><a href="#分布式主键">分布式主键</a></li>
<li><a href="#柔性事务">柔性事务</a></li>
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<li><a href="#计划中">计划中</a>
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<li><a href="#配置-1">配置</a></li>
<li><a href="#治理">治理</a></li>
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<li><a href="#待定">待定</a>
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<li><a href="#dql-1">DQL</a></li>
<li><a href="#dml-1">DML</a></li>
<li><a href="#ddl-1">DDL</a></li>
<li><a href="#sql解析提升">SQL解析提升</a></li>
<li><a href="#柔性事务提升">柔性事务提升</a></li>
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                <h1>未来线路规划</h1>
                



<h2 id="已完成">已完成</h2>

<h3 id="数据库">数据库</h3>

<ol>
<li>MySQL</li>
<li>Oracle</li>
<li>SQLServer</li>
<li>PostgreSQL</li>
</ol>

<h3 id="dql">DQL</h3>

<ol>
<li>JOIN</li>
<li>BETWEEN</li>
<li>IN</li>
<li>ORDER BY</li>
<li>GROUP BY</li>
<li>COUNT, SUM, MAX, MIN, AVG</li>
<li>LIMIT, rownum, TOP</li>
<li>非功能型子查询</li>
</ol>

<h3 id="dml">DML</h3>

<ol>
<li>INSERT INTO</li>
<li>INSERT SET</li>
<li>UPDATE</li>
<li>DELETE</li>
</ol>

<h3 id="ddl">DDL</h3>

<ol>
<li>CREATE</li>
<li>ALTER</li>
<li>DROP</li>
<li>TRUNCATE</li>
</ol>

<h3 id="配置">配置</h3>

<ol>
<li>Java API</li>
<li>Spring命名空间</li>
<li>Yaml (仅读写分离未完成)</li>
</ol>

<h3 id="sql解析">SQL解析</h3>

<ol>
<li>词法分析</li>
<li>语法分析</li>
</ol>

<h3 id="sql改写">SQL改写</h3>

<ol>
<li>正确性改写</li>
<li>优化改写</li>
</ol>

<h3 id="访问路由">访问路由</h3>

<ol>
<li>Hint路由</li>
<li>简单路由</li>
<li>笛卡尔积路由</li>
</ol>

<h3 id="结果归并">结果归并</h3>

<ol>
<li>流式归并</li>
<li>内存归并</li>
<li>装饰者归并</li>
</ol>

<h3 id="分库分表">分库分表</h3>

<ol>
<li>分库</li>
<li>分表</li>
<li>动态表</li>
<li>默认数据源</li>
</ol>

<h3 id="读写分离">读写分离</h3>

<ol>
<li>读写分离</li>
<li>同一线程且同一数据库连接内一致性保证</li>
<li>Hint强制主库路由</li>
</ol>

<h3 id="分布式主键">分布式主键</h3>

<ol>
<li>JDBC集成</li>
<li>分布式主键策略接口</li>
<li>基于snowflake的分布式主键算法实现</li>
</ol>

<h3 id="柔性事务">柔性事务</h3>

<ol>
<li>最大努力送达型</li>
</ol>

<h2 id="计划中">计划中</h2>

<h3 id="配置-1">配置</h3>

<ol>
<li>读写分离独立化</li>
<li>Binding策略提升</li>
<li>集中化</li>
<li>动态化</li>
</ol>

<h3 id="治理">治理</h3>

<ol>
<li>数据源健康检测及发现</li>
<li>数据源动态切换</li>
<li>流量控制</li>
</ol>

<h2 id="待定">待定</h2>

<h3 id="dql-1">DQL</h3>

<ol>
<li>DISTINCT</li>
<li>HAVING</li>
<li>OR</li>
<li>UNION, UNION ALL</li>
<li>全子查询</li>
<li>计算表达式，如：SUM(pv) / COUNT(uv)</li>
<li>通过SQL注释指定SQL Hint</li>
</ol>

<h3 id="dml-1">DML</h3>

<ol>
<li>INSERT INTO VALUES (xxx), (xxx)</li>
<li>多表UPDATE</li>
<li>多表DELETE</li>
</ol>

<h3 id="ddl-1">DDL</h3>

<ol>
<li>CREATE VIEW</li>
<li>CREATE INDEX</li>
<li>CREATE OR REPLACE</li>
</ol>

<h3 id="sql解析提升">SQL解析提升</h3>

<ol>
<li>批量解析</li>
<li>冗余括号</li>
<li>通过SQL注释指定SQL Hint</li>
</ol>

<h3 id="柔性事务提升">柔性事务提升</h3>

<ol>
<li>TCC</li>
</ol>

<h3 id="运维工具">运维工具</h3>

<ol>
<li>字典表复制广播</li>
<li>动态扩容</li>
</ol>


      
      
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